Credit Card Payoff Calculator

See how long your credit card balance will take to pay off — and how much interest you'll pay — based on your APR and monthly payment.

Inputs

Card balance

APR

Monthly payment

Results

Months to debt-free

Total interest

$2,410.74

Total you'll pay

$8,910.74

Debt-free by

October 2029

If your payment barely covers the monthly interest, the balance never shrinks. Paying even $50 more per month can cut years off the timeline.

Comprehensive Guide & Formulas

By CalcSuite Editorial TeamUpdated 17 October 20269 min read

Direct Summary / AI Overview

Debt-free date & interest

Key Takeaways & Benchmarks

✓Months to payoff = −log(1 − (rate × balance) ÷ payment) ÷ log(1 + rate).
✓Minimum payments are mostly interest — raising payments shortens payoff exponentially.
✓A $6,500 balance at 22% APR costs ~$2,200 in interest at $250/month.
✓If your payment doesn't exceed the monthly interest, the balance grows forever.
✓Keep a small emergency buffer so surprises don't go back on the card.

How credit card payoff math works

Each month, your card charges interest on the outstanding balance, then your payment covers that interest first and whatever remains reduces the principal. Next month's interest is calculated on the new, slightly smaller balance. This is amortisation — the same mechanics as a mortgage, but at rates five times higher.

The cruelty is in the proportions. At 22% APR, nearly half of a minimum payment can be pure interest. Raising your payment doesn't just add dollars — it shifts the ratio, so each month a larger share attacks principal. That's why payoff time falls faster than the payment rises.

1
Enter your balance
What you owe right now.
2
Set your APR
The annual rate on your statement.
3
Choose a monthly payment
Anything above the minimum.
4
Read your debt-free date
Months, total interest and total paid.

The formula

"Monthly rate = APR ÷ 12"

"Months = −log(1 − (rate × balance) ÷ payment) ÷ log(1 + rate)"

"Total interest = (payment × months) − balance"

"Payment must exceed balance × monthly rate, or the debt never shrinks"

Worked example

$6,500 at 22% APR with $250/month: the monthly rate is 1.833%, the payoff takes about 35 months, total interest is roughly $2,200, and you're debt-free around three years out. Total paid: about $8,700 on a $6,500 purchase.

Raise the payment to $400/month and everything changes: 19 months, about $1,150 in interest, total paid roughly $7,650. An extra $150/month saves $1,050 in interest and 16 months of payments. That's the highest guaranteed 'return' available to most households.

Escaping faster

▸Pay more than the minimum — every extra dollar shortens the timeline exponentially.
▸Consider a 0% balance transfer, but clear it before the promo expires.
▸Stop adding new charges; a payoff plan plus new spending is just treading water.
▸Attack the highest-APR balance first across multiple debts.
▸Keep a small emergency buffer so surprises don't land back on the card.

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Frequently asked questions

How long will it take to pay off my credit card?+

It depends on the balance, APR and monthly payment. A $6,500 balance at 22% APR with $250/month payments takes about 35 months and costs roughly $2,200 in interest. Bump the payment to $350 and it drops to about 23 months and $1,450 in interest. Enter your numbers above for your exact timeline.

How is credit card interest calculated?+

Most cards use average daily balance: each day's balance × (APR ÷ 365), summed monthly. This calculator uses the standard amortisation formula, which closely approximates it for payoff planning. The key insight: interest compounds monthly against you, which is why minimum payments are so punishing.

Why do minimum payments take so long?+

Because minimums are typically 1–2% of the balance — barely above the monthly interest charge. On a $6,500 balance at 22% APR, the first month's interest alone is about $119. A $130 minimum payment retires just $11 of principal. You're running on a treadmill tilted uphill.

Should I pay more than the minimum?+

Always, if you possibly can. Every extra dollar goes straight to principal and shortens the timeline exponentially, not linearly — because less principal means less interest next month, which means more of your payment hits principal. It's a virtuous cycle, the mirror image of compounding working for you in the Compound Interest Calculator.

Is it better to pay off the credit card or save?+

Pay the card first if its APR exceeds what your savings could earn — and at 20%+ APR, it always does. Keep a small $1,000 emergency buffer so surprises don't go back on the card (see the Emergency Fund Calculator), then throw everything at the balance.

What happens if my payment doesn't cover the interest?+

The balance grows every month despite your payments — negative amortisation. The calculator shows 'Never' in that case, which is honest: you must raise the payment above the monthly interest charge (balance × APR ÷ 12) before any progress is possible.

Will paying off my card hurt my credit score?+

Temporarily it can dip as the account age mix changes, but lower utilisation (balance ÷ limit) strongly helps your score. Paying a card to zero typically improves credit health within a few months. Never keep a balance just for the score — interest paid is never worth points gained.

Should I do a balance transfer to a 0% card?+

Often yes, if you qualify: 12–18 months at 0% lets every dollar attack principal. Watch the transfer fee (usually 3–5%) and have a plan to clear the balance before the promo rate expires — otherwise you're back where you started, minus the fee. Multiple cards? The Debt Snowball Calculator compares payoff orders.